UWP NavigationView和TabView碰撞

Question

As you can see from the top of the image, the hamburger button of the NavigationView overlaps with my TabView.TabStartHeader . The TabView is in a Frame of MainPage while NavigationView is in the MainPage .

Now I want them aligned horizontally with the hamburger button on the left and the Add button on the right. How can I achieve that?

XAML of MainPage: https://github.com/SeakyLuo/SMPlayer/blob/master/SMPlayer/MainPage.xaml

XAML of TabView: https://github.com/SeakyLuo/SMPlayer/blob/master/SMPlayer/PlaylistsPage.xaml

Answer 1

The problem that you are facing is due to the default behavior of the NavigationView . Whenever the window size is reduced to a certain limit, PaneDisplayMode is changed to LeftMinimal to increase the viewable area . Thus the Frame which was previously sitting beside the navigation view is now directly below the navigation bar . Due to this, the "New Tab" button of the Tab View goes below the "hamburger Button" of the navigation bar .

The highlighted selection shows the area covered by the Frame which has the page with the TabView

To prevent this from happening the easiest way would be to specify a single PaneDisplayMode for all screen sizes :

<NavigationView
            x:Name="MainNavigationView"
            ........
            PaneDisplayMode="LeftCompact">

---

A better approach would be to switch the PaneDisplayMode using VisualStateManager or Adaptive Triggers .

For example you can have the PaneDisplayMode as 'Auto' for window size greater than ~700px (based on your preference) and for lower window sizes you can switch it to 'Top'/'Left Compact'.

XAML Code

<VisualStateManager.VisualStateGroups>
        <VisualStateGroup x:Name="VisualStateGroup">
            <VisualState x:Name="VisualStateMin0">
                <VisualState.Setters>
                    <Setter Target="MainNavigationView.(NavigationView.PaneDisplayMode)" Value="LeftCompact"/>
                </VisualState.Setters>
                <VisualState.StateTriggers>
                    <AdaptiveTrigger MinWindowWidth="1" MinWindowHeight="1"/>
                </VisualState.StateTriggers>
            </VisualState>
            <VisualState x:Name="VisualStateMin700">
                <VisualState.StateTriggers>
                    <AdaptiveTrigger MinWindowWidth="700" MinWindowHeight="1"/>
                </VisualState.StateTriggers>
            </VisualState>
        </VisualStateGroup>
    </VisualStateManager.VisualStateGroups>

You should see a behavior like this :

PaneDisplayMode - Top for small window size :

PaneDisplayMode - Left Compact for small window size :

---

Update after Seaky Luo's comment :

Exact solution (though it does not look as natural as the other solutions):

For this you will need to add left margin to the "New Tab" button when the window size is small and the NavigationView switches to LeftMinimal .

I found that when the width is around ~640 the navigation view goes into LeftMinimal (you might have to fine tune that number).

XAML Code : [To be added to the Page called within the frame (PlayListsPage.xaml in this case)]

<VisualStateManager.VisualStateGroups>
        <VisualStateGroup x:Name="VisualStateGroup">
            <VisualState x:Name="VisualStateMin0">
                <VisualState.Setters>
                    <Setter Target="NewPlaylistButton.(FrameworkElement.Margin)">
                        <Setter.Value>
                            <Thickness>40,0,0,0</Thickness>
                        </Setter.Value>
                    </Setter>
                </VisualState.Setters>
                <VisualState.StateTriggers>
                    <AdaptiveTrigger MinWindowWidth="1" MinWindowHeight="1"/>
                </VisualState.StateTriggers>
            </VisualState>
            <VisualState x:Name="VisualStateMin640">
                <VisualState.StateTriggers>
                    <AdaptiveTrigger MinWindowWidth="640" MinWindowHeight="1"/>
                </VisualState.StateTriggers>
            </VisualState>
        </VisualStateGroup>
    </VisualStateManager.VisualStateGroups>

It should look something like this :

Hope this helps !